Automatic stoker



Jan. 22, 1946. E. cfsc-HNEIDER AUTOMATIC STOKER `Filed May 12, i945 2 Sheets-Sheet 1 INVENTOR Emu. C; SgYHNEIDER Jan- 22, 1946 "E, c. scHNEiDER 2,393,422

AUTOMATIC S TOKER Filed May l12, 1945 2 Sheets-Sheet 2 j l' u:

53 l MM y 303% Irl! l .I l 27 'i .36 n INVEN'TOR '.EMIYC. ScHNEIDER,

Patented Jan. 22, 1946 UNITED" STATES The presentv inventionre1ates to automatic stokers Afor coal-burning rfurnaces'and more particularly to a coal stoker -ofa'simplef; troublefreedesign. Y" I Existing stokers have certain well-recognized drawbacks which detract considerably from their otherwise comparatively satisfactory design and operation.l Some of these drawbacks include'the inability to handleallthe various common types VY`of solidV fuel, failure to remove-ash completely, lack of eiective controloverthefuel level in the furnaceklack of .provisionfor .preventing jammingA of and damage tothe equipment due to oversize pieces of fuel or `fuel overfeed and general infiexibility to varying conditions encountered during operation or for different installations. So far as I am aware these drawbacks have not heretofore been overcome. v f

` It is, accordingly, one xof theobjects `of my present invention to provide an automatic coal stoker whichv overcomes the defects and disadvantagesof prior stokers and which has new and useful features of unique nature. ,Y Y Another Aobject of the 'invention resides in the provision of a stoker which is capable of handling anthracite and bituminous coal as well as coke of 'Likenumerals designate corresponding parts throughout the various views of the drawings.

wReferring now to the/drawings in detail, the

numeral IIJ indicatesfthefuel feeding ram which is adapted to'be reciprocated within the elongatedy housing `I I. lThe upper surface of ram l0 issaw-toothed ror serrated and acts to push incrementally into the Stoker proper solid fuel fed theretol through hopper- I2. Reciprocation of ramr Iltis-effected in'any suitable manner vas by theeccentric drive meansdesignated lby the numeral1I3.- 'Housing II extends substantially to the' centerof the cylindrical housing I4 which is supported within a furnace (not shown) of any'suitable kind and construction the details of which per se dform no part of this invention. The-inner end of housing II is provided with-a hinged fuel regulating door I5 which swings outwardly toenableoversized pieces of fuel to be discharged without jamming or` causing damage to the Ystoker or its appurtenances. Door I5 is heavy enough (thickened ork counterweighted at its lower edge if additional weight is desired) to level off the supply of fuel and ensure substantial uni.- formity ofv fuel feed, the quantity of which per unit of time is-y adjustable bychanging the vertical positioning of the door by theturning action of pinion I6 on racks I1 to kwhich the door is ati `tached. Suitablevertical guides I8 are provided for the; door I5 asvshown.

Ity will be clear that the higher the door is raised' the greater will be the amountof fuel fed. Theposition of the door isregulatedaccording to the nature vof the'fuel beunderstood by those skilled in this art or will be apparent or pointed out hereinafter.' Y ,Y In the accompanying drawings wherein I have illustrated a preferred embodiment ofvmy invention:

Fig.2 isajsectional"view through the stoker along the line 2-2 of Fig. 1;

Fig'. 3 is a front elevational view of the stoker of Fig. l with parts broken away to'expose the interior construction;

Fig. 4 is a. schematic View taken along line 4-4 of Fig. 2 and Fig. 5 is a side Velevational view of a. complete Stoker unit with parts broken away to expose the construction ofthe fuel feeding ram.

plan view of my new automaticcoal at y somewhat less than fora reasonto be explained.

and theheating effect to be produced. Pinion I6 is turnedby means of shaft I9 mounted in-and supported by hangers 20. l

Axially disposed on th floor 2I of the cylindrical housing=l4 is a socketed boss 22 into which revolvably fits f the downwardY extension 23 of post .24... AThe diameterv of post 24 is, however, thatof the upper end of the providing /an annular shoulis cut away at 26 Within housing I4 is also. alspiderhwhich is comprised of a rim 21 and spokes 28V connected topost24 which serves as the hub. Rim 21 has a cross-section in the form of an inverted L, the lower edge of which is formed as a circular rack or gear meshing with bevel gear 29 which is fixed on the shaft 30 projecting through a bushing provided at a suitable location in the side of housing I4. Shaft 30 is slowly rotated by any suitable source of Vpower such as a low speed or geared-down electric motaperingboss 22 thus dery 2.5A .one portion of which tor (not illustrated) A grate member 32 of seg- 

